CVE-2016-2851
critical
CVSS v3
9.8
CVSS v4 NEW
—
VIR risk
9.8
Description
Integer overflow in proto.c in libotr before 4.1.1 on 64-bit platforms allows remote attackers to cause a denial of service (memory corruption and application crash) or execute arbitrary code via a series of large OTR messages, which triggers a heap-based buffer overflow.
Predictions
Exploit likelihood
97%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| debian | bookworm | fixed | 4.1.1-1 |
| debian | bullseye | fixed | 4.1.1-1 |
| debian | forky | fixed | 4.1.1-1 |
| debian | sid | fixed | 4.1.1-1 |
| debian | trixie | fixed | 4.1.1-1 |
| suse | 42.1 | affected | |
| suse | 13.2 | affected | |
| debian | 7.0 | affected | |
| debian | 8.0 | affected | |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| cypherpunks | libotr | {"endIncluding":"4.1.0"} | |
References
- https://www.suse.com/security/cve/CVE-2016-2851.html
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00021.html
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00030.html
- http://seclists.org/fulldisclosure/2016/Mar/21
- http://www.debian.org/security/2016/dsa-3512
- http://www.securityfocus.com/archive/1/537745/100/0/threaded
- http://www.securityfocus.com/bid/84285
- http://www.ubuntu.com/usn/USN-2926-1
- https://lists.cypherpunks.ca/pipermail/otr-users/2016-March/002581.html
- https://security.gentoo.org/glsa/201701-10
- https://www.exploit-db.com/exploits/39550/
- https://www.x41-dsec.de/lab/advisories/x41-2016-001-libotr/
- https://security-tracker.debian.org/tracker/CVE-2016-2851
CWEs
CWE-119
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.